Optical dating of Holocene sand dune activities in the Horqin sand-fields in inner Mongolia；China；using the SAR protocol

IEECAS SKLLQG

Influence of low doses microwave radiation on activities of antioxidative enzymes of Isatis indigotica seedlings exposed to enhanced UV-B radiation

IEECAS SKLLQG

Synthesis of monomethylated dioscin derivatives and their antitumor activities

All possible eight monomethylated dioscin derivatives (1-8) were synthesized. Their inhibitory activities against P388 and A-549 cells were determined, and the results indicate that six of the eight hydroxyls of dioscin are the 'key polar groupings' for tumor inhibitory activities. (C) 2002 Elsevier Science Ltd. All rights reserved.